MTN South Africa

I have a home WiFi with MTN South Africa, last week I moved from my original address to a new place and I have requested MTN to change the address. I was on a call yesterday the 1/06/2022 with the consultants, and they failed to assist me. They are rude, I waited for 1 hour they keep on transferring my calls. I am tired, I wish they can cancel this contract so that I can go to another providers.